Receiving device

[0007]The present invention improves conventional disadvantages, eliminates switching between reception modes frequently, and prevents a reception error. A receiving apparatus of the present invention includes a receiver capable of switching between a high-sensitivity mode, a power-saving mode having a reception sensitivity lower than that in the high-sensitivity mode, and an intermediate reception mode having a reception sensitivity lower than that in the high-sensitivity mode and higher than that in the power-saving mode; and a reception environment acquiring unit acquiring a reception environment, connected to the output side of the receiver. The receiving apparatus further includes a controller that switches the receiver, if the receiver is in the high-sensitivity mode, to the intermediate reception mode when a reception environment acquired by the reception environment acquiring unit becomes better than the release threshold; and if the receiver is in the intermediate reception mode, to the power-saving mode when a reception environment acquired by the reception environment acquiring unit becomes better than the first threshold. With this configuration, the difference in sensitivity between the high-sensitivity mode and intermediate reception mode, and that between the intermediate reception mode and power-saving mode are smaller than that between the high-sensitivity mode and power-saving mode, thereby preventing frequent switching caused by a large difference in sensitivity between the reception modes at switching control. That is, state transition between the reception modes are performed while suppressing a reception error occurring.

However, diversity reception method has two series of antennas and receivers, and thus an increase of power consumption becomes a problem with a battery-powered mobile terminal.

However, diversity reception has significantly favorable reception sensitivity compared to single reception, resulting in frequent switching between diversity reception and single reception when switching control is performed according to a reception environment, which may cause a reception error.